The 2024+ S650 is the newest Mustang, and the aftermarket is catching up fast. If you just picked up a GT or a Dark Horse, here is where to start so your first mods are the right ones.
Quick answer: Start with sound and looks (exhaust, intake), then handling (suspension), and verify fitment carefully, since the S650 is a fresh platform and parts are still expanding.
Start with sound
An exhaust is the mod you feel every drive. On the S650, an axle-back or catback wakes up the car without touching anything under the skin. If your car has active exhaust, look for systems built to work with it. The tone-and-drone logic in our catback guide applies here too.
Add response with an intake
A cold air intake adds growl and throttle feel. Confirm whether the one you want is a no-tune design for the S650 or expects a tune.
Then dial in handling
Lowering springs or coilovers close the wheel gap and sharpen the car. Expect a firmer ride. We break down that tradeoff in our lowering springs guide.
Dark Horse notes
The Dark Horse is its own trim with its own hardware. Do not assume a base GT part fits it. Always check the fitment for Dark Horse specifically.
Fitment notes and gotchas
- The S650 is new. Parts catalogs are still filling in, so verify your exact year and trim.
- Active exhaust and trim-specific hardware change what fits.
- Tunes for the newest platform evolve quickly. Confirm current support before buying tuner-dependent parts.
Start your build with everything for the 2024+ S650 Mustang, then explore exhaust, intakes, and suspension.
